Welcome to crosh, the Chrome OS developer shell.

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crosh> shell
chronos@localhost / $ sudo fdisk -l /dev/sdb

Disk /dev/sdb: 28.9 GiB, 31009800192 bytes, 60566016 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xf12f7589

Device     Boot Start      End  Sectors  Size Id Type
/dev/sdb1        2048 60566015 60563968 28.9G 83 Linux

chronos@localhost / $ http://pastebin.com/japGhvZE